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Solid geometry, including table of major three-dimensional shapes; Box-drawing character; Cuisenaire rods (learning aid) Geometric shape; Geometric Shapes (Unicode block) Glossary of shapes with metaphorical names; List of symbols; Pattern Blocks (learning aid)
This is a list of two-dimensional geometric shapes in Euclidean and other geometries. For mathematical objects in more dimensions, see list of mathematical shapes. For a broader scope, see list of shapes.
Order-5 5-cell honeycomb; 120-cell honeycomb; Order-5 tesseractic honeycomb; Order-4 120-cell honeycomb; Order-5 120-cell honeycomb; Order-4 24-cell honeycomb; Cubic honeycomb honeycomb; Small stellated 120-cell honeycomb; Pentagrammic-order 600-cell honeycomb; Order-5 icosahedral 120-cell honeycomb; Great 120-cell honeycomb
1733 – Giovanni Gerolamo Saccheri studies what geometry would be like if Euclid's fifth postulate were false, 1796 – Carl Friedrich Gauss proves that the regular 17-gon can be constructed using only a compass and straightedge; 1797 – Caspar Wessel associates vectors with complex numbers and studies complex number operations in geometrical ...
In geometry, a polygon is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain. These segments are called its edges or sides , and the points where two of the edges meet are the polygon's vertices (singular: vertex) or corners .
Computable number: A real number whose digits can be computed by some algorithm. Period: A number which can be computed as the integral of some algebraic function over an algebraic domain. Definable number: A real number that can be defined uniquely using a first-order formula with one free variable in the language of set theory.
Geometry is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. Geometry is one of the oldest mathematical sciences. Geometry is one of the oldest mathematical sciences.
This is a list of volume formulas of basic shapes: [4]: 405–406 Cone – 1 3 π r 2 h {\textstyle {\frac {1}{3}}\pi r^{2}h} , where r {\textstyle r} is the base 's radius Cube – a 3 {\textstyle a^{3}} , where a {\textstyle a} is the side's length;